Which of the following statements is true regarding natural selection? A. it favors the survival of individuals that produce the most reproductively viable young that have adaptive characteristics and can themselves reproduce

B. it always selects complex forms over simplistic forms

C. it acts on genotypes rather than phenotypes

D. it assures the survival of each fit a given species, as long as there is no immediate threat of predators in the surrounding area

fluid balance is an aspect of the homeostasis of organisms in which the amount of water in the organism needs to be controlled, via osmoregulation and behavior, such that the concentrations of electrolytes (salts in solution) in the various body fluids are kept within healthy ranges. the core principle of fluid balance is that the amount of water lost from the body must equal the amount of water taken in.

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d

the answer is d its the most logical and accurate out of them all : )